package com.kuang.controller;


import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.thymeleaf.util.StringUtils;

import javax.servlet.http.HttpSession;

@Controller
public class LoginController {


    @RequestMapping("/user/login")
    // @ResponseBody
    public String login(
            @RequestParam("username") String username,
            @RequestParam("password") String password,
            Model model, HttpSession session){
        //Model回显数据

        //具体的业务
        if (!StringUtils.isEmpty(username) && "123456".equals(password)){
            session.setAttribute("loginUser",username);
            return "redirect:/main.html";     //表示登录成功跳转到这个页面
        } else {
            //model返回数据 告诉用户，你登录失败了！
            model.addAttribute("msg","用户名或者密码输出错误");
            return "index";
        }
    }

    //注销
    @RequestMapping("/user/logout")
    public String logout(HttpSession session){
        session.invalidate();   //移除，无效
        return "redirect:/index.html";
    }
}
